Draw bench.



AW. HADDOW.

DRAW BBNGHJ APPLICATION-FILED JULY 18, '1912,

' Patented' Apr. 1,1913.

l[12minfw; William Eaphaw of Ossining,

' screws 16 threaded through cross member l to the upper rails 20, 40 cfchannels 2, 4., re-

A Draw-Benches, of whichthe-following is a specificationwhereiil -on some simple framing such as opposite .inner end of horizontal sh'aft 11, and which UNITED STATES PATENT cerros.

WILLIAM aannemer ossInING, NEW YORK.

To aZZ, whom it may concern.'

Be it knownthat', WILLIAM Hannow, a citizen of the United States, and a resident in the county of Westchester and State of New York, have invented certain new and useful Improvements in speci'eation.

- This invention relates to. draw-benches and has for its object to provide a machine of the class'specilied of simple construction and large capacity in quantity of product.

I have illustrated my improved machine as particularly adaptedjordrawing tubes and have shown'it in its preferred embodiment in the drawing accompanying this Figure 1-is a plan view and Fig. 2 is a sectional elevation thereof. Fig.,8 is across sectional elevation online, 3 of Fig'. 1.

My improved machine may be'supported channels 2, laset edgewise with their anges inreachingl toward one another. yNear one end of said channels, cross member 5 is fixed and is provided with upper and lower hearings G midway of its length for rotatably 'supporting vertical shat 7. 'To the upper end of this shaft is fixed sprocket 8 and to the lower end bevel gear 9. v Said bevel gear isA driven by bevel pinion 10 on the shaft is provided as driving means for'said sprocket 8 and by which said sprocket may e driven in either direction. It will be understood that said shaft 11 in its turn may be driven from any suitable source of'lpower not shown.

Near the opposite end of channels 2, 4 and adjustably supported for movement length- Wise of said Achannels is carriage 12 'having upper and lower bearings 13 in which is rotatably mounted shaft 14 having sprocket 15 of the same size as sprocket 8 fixed thereto. Said carriage 12 may be adjusted rela.- tively to cross member 5 by means ofpush 17 fixed to channels 2,'4. An endless power. chain 18 is mounted on sprockets 8 and 15 and mayi bed'ven first in one direction and then in the other from shaft 11. Said sprockets 8 and 15 are so disposed relatively specificati@ of retten ratept. 'Application med Julyis, 1512. serial No. 710,209.

operating `,Back of said dies, to

spectivetas to cause chain 18 to travel in its leng 'wise runs just above rails 20, l10. l

DRAW-Britons.

vPateawfi Apr. 1.1913.

' Fixed to the'lengthwise runsot chain 1 8' are opposite,` work-gripper lcarria es19, v 21.

Eachof said carriages is .provi edi-with a reversible work-gripperas 22 on carriage 19. Saidworkfgripper is' of well-known form and may bereversedfrom end to Iend'of said carriage about pivot'23.4 'Each ofsaidA carriages as 19 may 'be provided with downwardly reaching anges 24.0verhanging upper rail as 20 ofchannel2 and out-- lWardly reaching from inner lange24- Nearl either end of Said carriage are arms as 25. bearing, pivotally mounted thereon, rolls as 26 vfo'r engagement with the underside of channel P retained in operative position on its rail while free to slideendwise thereon. For

end of themachine adjacent to sprocket 8 `opposite dies 31, 32 in line with the workgrippers on carriages 19, 21, respectively. Said dies may be supported in someconvenient manner as by bolting to cross member 33 supported from opposite u-prights 34, 35 fixed to channels 2', 4. Behindsaid dies, to the left, Figs. 1 and 2, I Vmount work table 350. Said table preferably .extends over sprocket S forming a cover therefor and -may be supported from channels 2, 4'.

On the opposite yend of the machine I provide a second pair of dies 36, 37l fixed to cross membe supported from upriglits 39, 400 fixed" to channels 2, 4, respectively. the right, Figs. 1 and' .2, I mount a second work `4table 41. `thuis provide a double-ended draw-bench having double dies at each end. f

-The operation -of` my improved machiney is las follows: lVhen operated as asingief ended double die bench themachinemay beserved by one operator;v irst'i-ns'erting a; tube end through die 31' into the jaws-of rail as 20. Said carriage is therebyf upon the tube I, provide .at oney work-gripper 22 therric'hine isthenstarted with sprocket.8.rotating in clockwise direction whereby carriage 19 is moved. down the machine to the' right, Figsl` and 2.Dur ing this operation ofdrawinfr the first tube, carriage 21 travels backward-ily to the left and at the time of the completionl of the stroke'of carriage 19 said carriage 21 is in receiving position relative to die 32. The machine being stopped in this positionthe tube whose drawing has been completed by carriage 19 is removed. A tube is then in.-

J'serted through die 32 and its end presented 

